Looking to make a device that can notify me when my washing machine or dryer cycle has stopped. I do not have any LED's on my washer or drier, so I was thinking about using vibration sensing (accelerometer, or knock sensor) to alert when vibration stops for 2 minutes (that way if it is between cycles, it won't false positive). Just backed the Onion 2+ on Kickstarter!

@Jay-Bremner, if you have a rotating knob like those old washing machines, you could use simple wires and conducting surface (aluminum foil), so that would make you a simple digital switch that you can use directly into your omega.

@francis-chung I would like to make a home electrical appliances remote monitoring and control system, so that even when away from your home/house, you can still be able to know and turn off appliances connected to power. This is useful in ways such that your iron-box will not burn your house before you get home to turn it off. I can sufficiently code the application with Python, so my major hurdle and holdback is that I don't have enough free time on my hands.

On the topic of ideas: I want to use an Omega2 to supercharge retro computers like the Commodore 64. Give it more storage, Wi-Fi, and so on. I've already done this with an Arduino (link) but a real Linux command-line through the Omega would be amazing.

Interface would be through serial, so the second UART on the Omega2 is very welcome.

But I wonder how hard it is pair (bluetooth) two Omegas (or Omega2s) together?

Basically with the pair, you have one doing the monitoring and the second performing tasks. The reason for pairing is that the system is not completely shut down by one of them going out. True, the one performing actions could still be performing incorrect actions if it is the problem module, but there is an idea I could program a baseline action that performs no actions as the default.

@Rafael-Roman The cheepest way would be to build a phone app. All the hardware that you need are already assembled and ready to use in any smart phone. There are tons of QRCODE apps out there, so you could perhaps modify and existing open-source one to suit your needs.